CN103480579B - Screening and weighing device and screening and weighing method for granular rock particle size distribution - Google Patents
Screening and weighing device and screening and weighing method for granular rock particle size distribution Download PDFInfo
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- CN103480579B CN103480579B CN201310473711.6A CN201310473711A CN103480579B CN 103480579 B CN103480579 B CN 103480579B CN 201310473711 A CN201310473711 A CN 201310473711A CN 103480579 B CN103480579 B CN 103480579B
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Abstract
The invention relates to a screening and weighing device and screening and weighing method for granular rock particle size distribution. The screening and weighing device comprises a screening device connected with a feeder and a weighing device connected with the screening device, and is characterized in that the screening device comprises a steel-structure frame, guide rails arranged on a horizontal ground base, a push-pull flat block in rolling connection with the guide rails, a reciprocating type vibrating table fixed to the push-pull flat block through bolts and a rectangular stacking combination type bushing screen, and a lifting mechanism is arranged on the upper portion of the steel-structure frame. The screening and weighing device is used for screening and weighing the granular rock particle size distribution to screen and weigh granular rock samples of a 0-10 particle class obtained from a blast heap or a rock discharging field , the percentage content of the granular rocks of the particle glass range in the blast heap or the rock discharging field is confirmed, and important basic data are provided for optimizing mine blasting parameters, determining economical and reasonable explosive unit consumption and explosive payload and carrying out rock discharging field slope stability study.
Description
Technical field
The present invention relates to a kind of screening weighing technology field, particularly relate to screening meausring apparatus and the screening weighing technique of the distribution of a kind of prose style free from parallelism rock grain size.
Background technology
In the open in the recovery process of ore deposit, explosion and row's rock operation are two important process procedures in Production of Strip Mine.The mining junkyard that the quick-fried heap that explosion is formed, the operation of row's rock are formed all is made up of the prose style free from parallelism rock that granularity is different, and the size distribution of prose style free from parallelism rock has certain feature.
Study the prose style free from parallelism rock grain size distribution characteristics of quick-fried heap, particularly determine distribution characteristics and the content of the fine-graded prose style free from parallelism rock of below 100mm particle diameter can cross crushing phenomenon for whether analysis mine blasting exists rock, determine that explosive specific charge and the explosive payload of economical rationality provide important basic data, to improving mine blasting quality, increasing economic efficiency and there is very important practical significance.
The prose style free from parallelism rock grain size distribution characteristics of research mining junkyard, especially fine-graded rock distribution characteristic sum content below 100mm particle diameter, to the physico-mechanical properties experiment carrying out prose style free from parallelism rock, deterministic force mathematic(al) parameter and the analysis of mining junkyard prose style free from parallelism Analyzing method of rock slope stability are absolutely necessary basic data.
At present, carrying out the more advanced method of determination and analysis for the prose style free from parallelism rock grain size distribution of quick-fried heap and mining junkyard is photographic imagery analytical method.Take pictures on the spot at quick-fried heap or mining junkyard scene, then utilize Computer aided analysis to carry out analyze and grain size analysis to image picture, finally obtain the granularmetric composition of each grade of prose style free from parallelism rock.Photographic imagery analytical method can understand the image information that the photo of taking pictures provides, and obtains the degree of the prose style free from parallelism rock of more than 100mm different-grain diameter in quick-fried heap or mining junkyard, automatically can draw out prose style free from parallelism rock grain size distribution curve.But, there is an obvious weak point by photographic imagery analytical method, namely can accurately not determine that particle diameter is less than the actual percentage content of the prose style free from parallelism rock of below 100mm.This is because fine-graded rock particles has in the gap be a lot embedded between the larger sillar of particle diameter, this part fine-graded rock cannot be absorbed exist in the photo of taking pictures, thus particle diameter is less than to the rock of 100mm, analysis software can not separate the degree reading this part rock exactly, the size distribution of done size distribution curve disappearance 0 ~ 100mm particle diameter rock, and the particle size distribution characteristic of this part rock is very important exactly.In addition, show according to retrieval and to the investigation result of laboratory and production factories and miness, the bulk material screening used in laboratory or factories and miness product quality station at present and weighing equipment are the equipment of independent operating, the material collecting box of the size fractionated that bulk material obtains after screening is collected, and adopts the different modes such as operating personnel's carrying, Pipeline transport or rubber conveyer conveying to be transported on weighing equipment by the bulk material after screening and weighs.
Summary of the invention
The object of the invention is for the deficiency existing for prior art, and the screening meausring apparatus providing a kind of prose style free from parallelism rock grain size to distribute and screening weighing technique, this device adopts and stacks combination bushing screen, can the rock sample of the prose style free from parallelism rock of the 0 ~ 100mm grade obtained from quick-fried heap or mining junkyard be sieved and be weighed, determine the degree of this size fraction ranges prose style free from parallelism rock in quick-fried heap or mining junkyard, and then the particle size distribution characteristic of this size fraction ranges prose style free from parallelism rock can be drawn, compensate for the defect understanding image information technology of taking pictures with analysis software.
The object of the invention is to be realized by following technical proposals:
The screening meausring apparatus of prose style free from parallelism rock grain size distribution of the present invention, comprise the screening plant be connected with batcher, the meausring apparatus be connected with screening plant, it is characterized in that described screening plant comprises steel frame, be arranged on the guide rail on basis, cement flooring, roll with guide rail the push-and-pull Plan sliding transporting vehicle be connected, be bolted on reciprocating vibration platform on push-and-pull Plan sliding transporting vehicle and rectangle stacks combined type bushing screen, be provided with hoisting mechanism on the top of described steel frame
Described meausring apparatus is by the electronic weighing scale be arranged in steel frame, be arranged on the weighing lifting rope suspension plate on electronic weighing scale, weigh lifting rope and the backing board that is arranged on electronic weighing scale bottom formed, described weighing lifting rope is movably attached to rectangle through the aperture employing latch on the backing board of electronic weighing scale bottom and stacks on combined type bushing screen.
Described hoisting mechanism is by motor, the reductor in the middle of the top being arranged on steel frame, two reels be connected with motor, speed reducer drive respectively by belt or chain and the boom hoist cable be wound on respectively on two reels formed, and the other end of described boom hoist cable is connected with the backing board two ends of electronic weighing scale bottom respectively.
It is seven layers of bushing screen that described rectangle stacks formula combination bushing screen, and the mesh size of bushing screen reduces from top to bottom gradually, and each layer bushing screen is provided with dowel hole at the lower edges of surrounding, and is fixedly connected with by bearing pin.
Described mesh size is respectively 100mm, 80mm, 60mm, 40mm, 20mm and 10mm, and the bottom of described bushing screen is the collecting box that particle diameter is less than 10mm fine granules.
Be provided with in the junction of described shake table and bottom bushing screen and prevent from rectangle from stacking formula combining the locator card of bushing screen in the shake table surface changing of the relative positions.
The screening of the screening meausring apparatus adopting prose style free from parallelism rock grain size of the present invention to distribute and weighing technique, is characterized in that comprising the following steps:
Screening
1) Plan sliding transporting vehicle is pulled, rectangle is stacked formula combination bushing screen to pull out in steel frame, the prose style free from parallelism rock rock sample obtained from scene being loaded into rectangle stacks in the most last layer sieve of formula combination bushing screen, and the Weight control of each screening prose style free from parallelism rock sample is being less than 100 kilograms;
2) promote Plan sliding transporting vehicle rectangle is stacked formula combination bushing screen be advanced in steel frame, start reciprocating vibration platform, there is provided power to make rectangle stack the vibrations of formula combination bushing screen by reciprocating vibration platform to sieve, until prose style free from parallelism rock sample has been sized, and the sillar oversize in ground floor sieve and particle diameter being greater than 100mm cleans out;
Weigh
1) the weighing lifting rope 5 weighed in lifting rope suspension plate 13 being connected to rectangle with latch stacks on the most last layer sieve of formula combination bushing screen, after connection, starter motor, reductor 10, motor, reductor 10 promote the backing board 14 of electronic weighing scale by driving belt chain or chain 12 with movable reel 8 and the boom hoist cable 6 be wound on reel 8, rectangle is driven to stack formula combination bushing screen Integral lifting, after now electronic weighing scale 9 weighs up the gross weight of prose style free from parallelism rock sample, fall back bushing screen original position;
2) bearing pin in the dowel hole of n-th layer sieve is then successively pulled down from top to bottom, the n-th layer sieve of bushing screen and each layer sieve are below separated, start lifting motor, reductor, weigh up the sieve of more than this separating layer and the gross weight of prose style free from parallelism rock, repeat said process, until by complete for the weight weighing of each layer sieve prose style free from parallelism rock, the gross weight P of prose style free from parallelism rock sample and bushing screen can be drawn after weighing
always; The gross weight weighed for the N time is P
nif the weight of the following prose style free from parallelism rock of a certain particle diameter is P
n rock, the gross weight P of bushing screen; The deadweight of each individual layer sieve is P
i, the gross weight P of prose style free from parallelism rock sample
rock;
Its computing formula is:
P
rock=P
always-P
P
n rock=P
rock-(P
n-∑ P
i) (i=1 ~ N);
3) weighing data gone out according to above-mentioned formulae discovery draws 0 ~ 100mm prose style free from parallelism rock grain size distribution characteristics curve.
Advantage of the present invention is:
This screening meausring apparatus is the formula that the stacks screening meausring apparatus that dimensions is larger, can the prose style free from parallelism rock sample of the 0 ~ 100mm grade obtained from quick-fried heap or mining junkyard be sieved and be weighed, determine the degree of this size fraction ranges prose style free from parallelism rock in quick-fried heap or mining junkyard, and then draw the particle size distribution characteristic of this size fraction ranges rock, compensate for the defect that tomography imaging method understands image information technology existence of taking pictures, for optimizing mine blasting parameter, determine explosive specific charge and the explosive payload of economical rationality and carry out mining junkyard stability of slope Journal of Sex Research important basic data is provided.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Embodiments of the present invention are further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, the screening meausring apparatus of prose style free from parallelism rock grain size distribution of the present invention, comprise the screening plant be connected with batcher, the meausring apparatus be connected with screening plant, it is characterized in that described screening plant comprises steel frame 19, be arranged on the guide rail 2 on basis, cement flooring 1, to roll the push-and-pull Plan sliding transporting vehicle 3 be connected with guide rail 2, reciprocating vibration platform 17 on push-and-pull Plan sliding transporting vehicle 3 is fixed on and rectangle stacks combined type bushing screen 4 by bolt 18, hoisting mechanism is provided with on the top of described steel frame 19, rectangle can be stacked combined type bushing screen and move forward and backward by push-and-pull Plan sliding transporting vehicle 3, stack combined type bushing screen carry out sieving or clear up the rock sample after screening so that rock sample to be loaded rectangle.
Described meausring apparatus is by the electronic weighing scale 9 be arranged in steel frame 19, be arranged on the weighing lifting rope suspension plate 13 of electronic weighing scale 9 upper surface, weigh lifting rope 5 formed with the backing board 14 being arranged on electronic weighing scale 9 bottom, described weighing lifting rope 5 adopts latch to be movably attached to rectangle through the aperture on the backing board 14 of electronic weighing scale 9 bottom and stacks on combined type bushing screen.
Described hoisting mechanism is by motor, the reductor 10 in the middle of the top being arranged on steel frame 19, two reels 8 be in transmission connection respectively by belt or chain 12 and motor, reductor 10 and the boom hoist cable 6 be wound on respectively on two reels 8 formed, and the other end of described boom hoist cable 6 is connected with backing board 14 two ends of electronic weighing scale bottom respectively.Be with movable reel 8 by lifting motor reductor 10, promoted the backing board 14 of electronic weighing scale by boom hoist cable 6.
It is seven layers of bushing screen that described rectangle stacks combined type bushing screen 4, and the mesh size of bushing screen reduces from top to bottom gradually, and each layer bushing screen is provided with dowel hole 15 at the lower edges of surrounding, and is fixedly connected with by bearing pin.So that dismounting and installation.
Be that described mesh size is respectively 100mm, 80mm, 60mm, 40mm, 20mm and 10mm, the bottom that described rectangle stacks combined type bushing screen is the collecting box that particle diameter is less than 10mm fine granules.
Be provided with in the junction of described shake table and bottom bushing screen and prevent rectangle from stacking the locator card 16 of combined type bushing screen in the shake table surface changing of the relative positions.
The screening weighing technique of the screening meausring apparatus adopting prose style free from parallelism rock grain size of the present invention to distribute, is characterized in that comprising the following steps:
Screening
1) Plan sliding transporting vehicle 3 is pulled, rectangle is stacked formula combination bushing screen from pull-out in steel frame 19, the prose style free from parallelism rock rock sample obtained from scene being loaded into rectangle stacks in the most last layer sieve of formula combination bushing screen, and the Weight control of each screening prose style free from parallelism rock sample is being less than 100 kilograms;
2) promote Plan sliding transporting vehicle 3 rectangle is stacked formula combination bushing screen be advanced in steel frame 19, start reciprocating vibration platform 17, there is provided power to make rectangle stack the vibrations of formula combination bushing screen by reciprocating vibration platform 17 to sieve, until prose style free from parallelism rock sample has been sized, and the sillar oversize in ground floor sieve and particle diameter being greater than 100mm cleans out;
Weigh
1) the weighing lifting rope 5 weighed in lifting rope suspension plate 13 being connected to rectangle with latch stacks on the most last layer sieve of formula combination bushing screen, after connection, starter motor, reductor 10, motor, reductor 10 promote the backing board 14 of electronic weighing scale by driving belt chain or chain 12 with movable reel 8 and the boom hoist cable 6 be wound on reel 8, rectangle is driven to stack formula combination bushing screen Integral lifting, after now electronic weighing scale 9 weighs up the gross weight of prose style free from parallelism rock sample and bushing screen, fall back bushing screen original position;
2) bearing pin in the dowel hole 15 of n-th layer sieve is then successively pulled down from top to bottom, make bushing screen n-th layer sieve with below each layer sieve separate, start lifting motor, reductor 10, weigh up the sieve of more than this separating layer and the gross weight of prose style free from parallelism rock, repeat said process, until by complete for the weight weighing of each layer sieve prose style free from parallelism rock, the gross weight P of prose style free from parallelism rock sample and bushing screen can be drawn after weighing
always, the gross weight weighed for the N time is P
nif, the gross weight P of prose style free from parallelism rock sample
rock; The weight of the following prose style free from parallelism rock of a certain particle diameter is P
n rock; The gross weight P (datum) of bushing screen; The deadweight of each individual layer sieve is P
i(datum),
Its computing formula is:
P
rock=P
always-P
P
n rock=P
rock-(P
n-∑ P
i) (i=1 ~ N);
3) weighing data gone out according to above-mentioned formulae discovery draws 0 ~ 100mm prose style free from parallelism rock grain size distribution characteristics curve.For the research of association area provides basic data.
The screening weighing technique of the screening meausring apparatus adopting prose style free from parallelism rock grain size of the present invention to distribute, can the rock sample of the prose style free from parallelism rock of the 0 ~ 100mm grade obtained from quick-fried heap or mining junkyard be sieved and be weighed, determine the degree of this size fraction ranges prose style free from parallelism rock in quick-fried heap or mining junkyard, and then the particle size distribution characteristic of this size fraction ranges prose style free from parallelism rock can be drawn, compensate for the defect understanding image information technology of taking pictures with analysis software.
Claims (5)
1. the screening meausring apparatus of a prose style free from parallelism rock grain size distribution, comprise the screening plant be connected with batcher, the meausring apparatus be connected with screening plant, it is characterized in that described screening plant comprises steel frame, be arranged on the guide rail on basis, cement flooring, roll with guide rail the push-and-pull Plan sliding transporting vehicle be connected, be bolted on reciprocating vibration platform on push-and-pull Plan sliding transporting vehicle and rectangle stacks combined type bushing screen, be provided with hoisting mechanism on the top of described steel frame
Described meausring apparatus is by the electronic weighing scale be arranged in steel frame, be arranged on the weighing lifting rope suspension plate on electronic weighing scale, weigh lifting rope formed with the backing board being arranged on electronic weighing scale bottom, described weighing lifting rope adopts latch to be movably attached to rectangle through the aperture on the backing board of electronic weighing scale bottom and stacks on combined type bushing screen
Described hoisting mechanism is by motor, the reductor in the middle of the top being arranged on steel frame, two reels be connected with motor, speed reducer drive respectively by belt or chain and the boom hoist cable be wound on respectively on two reels formed, and the other end of described boom hoist cable is connected with the backing board two ends of electronic weighing scale bottom respectively.
2. the screening meausring apparatus of prose style free from parallelism rock grain size distribution according to claim 1, it is characterized in that described rectangle stacks combined type bushing screen is seven layers of bushing screen, and the mesh size of bushing screen reduces from top to bottom gradually, each layer bushing screen is provided with dowel hole at the lower edges of surrounding, and is fixedly connected with by bearing pin.
3. the screening meausring apparatus of prose style free from parallelism rock grain size distribution according to claim 1, it is characterized in that described mesh size is respectively 100mm, 80mm, 60mm, 40mm, 20mm and 10mm, the bottom that described rectangle stacks combined type bushing screen is the collecting box that particle diameter is less than 10mm fine granules.
4. the screening meausring apparatus of prose style free from parallelism rock grain size according to claim 1 distribution, is characterized in that being provided with in described shake table and the junction of bottom bushing screen and prevents rectangle from stacking the locator card of combined type bushing screen in the surperficial changing of the relative positions of shake table.
5. adopt the screening of the screening meausring apparatus of prose style free from parallelism rock grain size according to claim 1 distribution, a weighing technique, it is characterized in that comprising the following steps:
Screening
1) Plan sliding transporting vehicle is pulled, rectangle is stacked formula combination bushing screen to pull out in steel frame, the prose style free from parallelism rock rock sample obtained from scene being loaded into rectangle stacks in the most last layer sieve of formula combination bushing screen, and the Weight control of each screening prose style free from parallelism rock sample is being less than 100 kilograms;
2) promote Plan sliding transporting vehicle rectangle is stacked formula combination bushing screen be advanced in steel frame, start reciprocating vibration platform, there is provided power to make rectangle stack the vibrations of formula combination bushing screen by reciprocating vibration platform to sieve, until prose style free from parallelism rock sample has been sized, and the sillar oversize in ground floor sieve and particle diameter being greater than 100mm cleans out;
Weigh
1) the weighing lifting rope latch weighed in lifting rope suspension plate being connected to rectangle stacks on the most last layer sieve of formula combination bushing screen, after connection, starter motor, reductor, motor, reductor promote the backing board of electronic weighing scale by driving belt chain or chain-driving reel and the boom hoist cable be wound on reel, rectangle is driven to stack formula combination bushing screen Integral lifting, after now electronic weighing scale weighs up the gross weight of prose style free from parallelism rock sample, fall back bushing screen original position;
2) bearing pin in the dowel hole of n-th layer sieve is then successively pulled down from top to bottom, make bushing screen n-th layer sieve with below each layer sieve separate, start lifting motor, reductor 10, weigh up the sieve of more than this separating layer and the gross weight of prose style free from parallelism rock, repeat said process, until by complete for the weight weighing of each layer sieve prose style free from parallelism rock, the gross weight P of prose style free from parallelism rock sample and bushing screen can be drawn after weighing
always, the gross weight weighed for the N time is P
nif, the gross weight P of prose style free from parallelism rock sample
rock; The weight of the following prose style free from parallelism rock of a certain particle diameter is P
n rock; The gross weight P of bushing screen; The deadweight of each individual layer sieve is P
i,
Its computing formula is:
P
rock=P
always-P
P
n rock=P
rock-(P
n-∑ P
i) (i=1 ~ N);
3) weighing data gone out according to above-mentioned formulae discovery draws 0 ~ 100mm prose style free from parallelism rock grain size distribution characteristics curve.
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| CN201310473711.6A CN103480579B (en) | 2013-10-10 | 2013-10-10 | Screening and weighing device and screening and weighing method for granular rock particle size distribution |
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| CN201310473711.6A CN103480579B (en) | 2013-10-10 | 2013-10-10 | Screening and weighing device and screening and weighing method for granular rock particle size distribution |
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| CN103480579B true CN103480579B (en) | 2015-07-01 |
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| CN109530219A (en) * | 2018-10-25 | 2019-03-29 | 河海大学 | A kind of screening plant and its application method quantitatively obtaining cohesiveless soil particle |
| CN111790594A (en) * | 2020-06-10 | 2020-10-20 | 新兴铸管股份有限公司 | Automatic grain-size screening device and method |
| KR102346296B1 (en) * | 2021-05-28 | 2022-01-03 | 한국기술교육대학교 산학협력단 | A portable apparatus for analyzing aggregate size |
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| CN103480579A (en) | 2014-01-01 |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Anshan Iron & Steel Group Mining Co., Ltd. |